Bug 32298: Page section added to cataloguing search

Bug 32298: Page section added to cataloguing search

Added div to "Records found in this catalog".
Added page-section class to "Records found in the reservoir".
Corrected level two heading and removed horizontal line as it is now superfluous.

Test plan:
1) Apply patch from bug 32298
2) Navigate to Cataloging
3) Enter a search into the search field and run the search
4) Verify that the white page section identifier is now visible around both sections

Mentored-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Sponsored-by: PTFS Europe
Signed-off-by: Hammat Wele <hammat.wele@inlibro.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>